<html>
<head><title>PTZ Remote Controller</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<meta content="text/html;charset=utf-8" http-equiv="Content-Type" />
<meta content="utf-8" http-equiv="encoding" />
<meta name="copyright" content="&copy; 2025 Steve Seguin" />
<meta name="license" content="https://github.com/steveseguin/vdo.ninja/LICENSE.md" />
<meta name="sourcecode" content="https://github.com/steveseguin/vdo.ninja" />
<meta name="robots" content="index, follow">
<link rel="canonical" href="https://vdo.ninja/">
<link rel="author" href="/about" />
<link rel="me" href="https://vdo.ninja/about" />

<meta id="metaTitle" name="title" content="VDO.Ninja" />
<meta name="description" content="Bring live video from your smartphone, computer, or friends directly into your Studio. 100% free." />
<meta name="author" content="Steve Seguin" />

<meta name="msapplication-TileColor" content="#da532c" />
<meta name="theme-color" content="#0f131d" />
		
<style>
body {
    padding: 0;
    margin: 0;
    background-color: #000;
    width: 100%;
    height: 100%;
    color: white;
    font-family: tahoma, arial;
}

a { color: white }

iframe {
    width: 100%;
    height: 100%;
    border: 0;
    margin: 0;
    padding: 0;
    display: block;
}

input {
    padding: 10px;
    width: 80%;
    font-size: 1.2em;
    z-index: 1000;
}

div {
    border: 0;
    margin: 0;
    padding: 0;
    text-align: center;
}

.slider-container {
    width: 80%;
    margin: 20px auto;
    padding: 10px;
    text-align: center;
}

.zoom-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 40px;
    background: #444;
    outline: none;
    border-radius: 20px;
}

.zoom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 60px;
    height: 60px;
    background: #4CAF50;
    cursor: pointer;
    border-radius: 30px;
    border: none;
}

.zoom-slider::-moz-range-thumb {
    width: 60px;
    height: 60px;
    background: #4CAF50;
    cursor: pointer;
    border-radius: 30px;
    border: none;
}
</style>
</head>
<body>

<div id="container1" style="width:100%;height:89%;display:none;"></div>
<div id="container2" style="width:100%;height:10%;display:none;">
    <div class="slider-container">
        <input type="range" min="-100" max="100" value="0" class="zoom-slider" id="zoomSlider">
    </div>
</div>
<div>
    <h2>Remote Zoom Control interface</h2>
    <input placeholder="Enter a view link. ie) https://vdo.ninja/?view=abc123" id="viewlink" type="text" onchange="loadIframes()" /><br>
    <br>
    This app is a custom remote client for VDO.Ninja's remote zoom control feature. It uses a slider for mobile friendly use.
    <br>
    <br>
    notes: Make sure the remote sender adds <b>&ptz</b> and <b>&remote</b> to their URL, otherwise PTZ remote control will not be allowed.
</div>
<script>
var iframe;
var lastZoomValue = 0;

function handleZoom(value) {
    if (iframe) {
        const delta = value - lastZoomValue;
        if (delta !== 0) {
            iframe.contentWindow.postMessage({"sendRequest":{zoom:delta}}, '*');
            lastZoomValue = value;
        }
    }
}

var urlEdited = window.location.search.replace(/\?\?/g, "?");
urlEdited = urlEdited.replace(/\?/g, "&");
urlEdited = urlEdited.replace(/\&/, "?");

if (urlEdited !== window.location.search) {
    console.warn(window.location.search + " changed to " + urlEdited);
    window.history.pushState({path: urlEdited.toString()}, '', urlEdited.toString());
}
var urlParams = new URLSearchParams(urlEdited);

if (urlParams.has("view") || urlParams.has("v")) {
    if (window.location.host) {
        var path = window.location.host+window.location.pathname.replace("/examples/","/").split("/").slice(0,-1).join("/");
    } else {
        var path = "vdo.ninja";
    }
    document.getElementById("viewlink").value = "https://"+path+"/";
    loadIframes();
}

function loadIframes() { 
    var iframesrc = document.getElementById("viewlink").value;
    
    document.getElementById("viewlink").parentNode.parentNode.removeChild(document.getElementById("viewlink").parentNode);
    document.getElementById("container1").style.display="inline-block";
    document.getElementById("container2").style.display="inline-block";
    
    var params = window.location.search || "";
        
    if (iframesrc.includes("?")) {
        params = params.slice(1);
        iframesrc = iframesrc + "&" + params
    } else {
        iframesrc = iframesrc + params
    }
    
    console.log(iframesrc);
    
    iframe = document.createElement("iframe");
    iframe.allow = "encrypted-media;sync-xhr;usb;web-share;cross-origin-isolated;accelerometer;midi;geolocation;autoplay;camera;microphone;fullscreen;picture-in-picture;display-capture;gyroscope;";
    iframe.src = iframesrc;
    document.getElementById("container1").appendChild(iframe);

    // Setup zoom slider events after iframe is loaded
    document.getElementById('zoomSlider').addEventListener('input', function(e) {
        handleZoom(parseInt(e.target.value));
    });
}
</script>
</body>
</html>